CVE-2026-26310

PoC —

CVSS 3.1

7.5 high

EPSS

<1%p32

Published

Mar 10, 2026 (Mar 10, 2026)

Modified

Jun 17, 2026

Description

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.

Vendors: envoyproxy
Products: envoy
Weakness: CWE-20
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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